25621488 has 80 divisors (see below), whose sum is σ = 74280960. Its totient is φ = 8455104.

The previous prime is 25621487. The next prime is 25621493. The reversal of 25621488 is 88412652.

25621488 is a `hidden beast` number, since 2 + 562 + 14 + 88 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25621487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54631 + ... + 55097.

It is an arithmetic number, because the mean of its divisors is an integer number (928512).

Almost surely, 2^25621488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25621488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37140480).

25621488 is an abundant number, since it is smaller than the sum of its proper divisors (48659472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25621488 is a wasteful number, since it uses less digits than its factorization.

25621488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611 (or 599 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 25621488 is about 5061.7672803083. The cubic root of 25621488 is about 294.8049577352.

The spelling of 25621488 in words is "twenty-five million, six hundred twenty-one thousand, four hundred eighty-eight".